One who increases the terumah portion, R' Eliezer says: [It is effective up to] one-tenth, like terumas maaser; [if he designated] more than this, he makes it terumas maaser for another place. R' Yishmael says: [It is effective up to] half chullin and half te-rumah. R' Tarfon and R' Akiva say: [It is effective] as long he leaves some chullin there.

At three junctures we assess the basket: at [the time of] the early fruits, at [the time of] the late fruits,, and at midsummer. One who counts is praiseworthy, one who measures is more praiseworthy than he, and one who weighs is more praiseworthy than the three of them.